coordinate/plugins/tls_plugin.py

import time
import json
import random
import re
import os
import uuid
import shutil
import socket
from datetime import datetime
from typing import List, Dict, Optional, Any, Callable
from urllib.parse import urljoin, urlparse, urlencode, parse_qs
from concurrent.futures import ThreadPoolExecutor
from DrissionPage import ChromiumPage, ChromiumOptions

import configure
from vs_plg import IVSPlg
from vs_types import VSPlgConfig, AppointmentType, VSQueryResult, VSBookResult, AvailabilityStatus, TimeSlot, DateAvailability, NotFoundError, PermissionDeniedError, RateLimiteddError, SessionExpiredOrInvalidError, BizLogicError 
from utils.cloudflare_bypass_for_scraping import CloudflareBypasser
from toolkit.mihomo_tunnel import MihomoTunnel
from utils.mouse import HumanMouse
from utils.keyboard import HumanKeyboard
from utils.fingerprint_utils import FingerprintGenerator


class BrowserResponse:
    """模拟 requests.Response"""
    def __init__(self, result_dict):
        result_dict = result_dict or {}
        self.status_code = result_dict.get('status', 0)
        self.text = result_dict.get('body', '')
        self.headers = result_dict.get('headers', {})
        self.url = result_dict.get('url', '')
        self._json = None

    def json(self):
        if self._json is None:
            if not self.text:
                return {}
            try:
                self._json = json.loads(self.text)
            except:
                self._json = {}
        return self._json

class TlsPlugin(IVSPlg):
    """
    TLSContact 签证预约插件 (DrissionPage 版)
    """

    def __init__(self, group_id: str):
        self.group_id = group_id
        self.config: Optional[VSPlgConfig] = None
        self.free_config: Dict[str, Any] = {}
        self.is_healthy = True
        self.logger = None
        
        self.mouse = None
        self.keyboard = None
        self.page: Optional[ChromiumPage] = None    
        self.travel_group: Optional[Dict] = None

        self.instance_id = uuid.uuid4().hex[:8]
        self.root_workspace = os.path.abspath(os.path.join("data/temp_browser_data", f"{self.group_id}.{self.instance_id}"))
        self.user_data_path = os.path.join(self.root_workspace, "user_data")
    
        if not os.path.exists(self.root_workspace):
            os.makedirs(self.root_workspace)
            
        self.last_refresh_time = time.time()
        self.tunnel = None
        self.session_create_time: float = 0

    def get_group_id(self) -> str:
        return self.group_id
    
    def set_log(self, logger: Callable[[str], None]):
        self.logger = logger
    
    def _log(self, message):
        if self.logger:
            self.logger(f'[TlsPlugin] [{self.group_id}] {message}')
        else:
            print(f'[TlsPlugin] [{self.group_id}] {message}')

    def set_config(self, config: VSPlgConfig):
        self.config = config
        self.free_config = config.free_config or {}
        
    def keep_alive(self):
        """
        统一保活机制：
        - 距离上次刷新超过 10 分钟：执行完整页面刷新并检查 Session。
        - 否则：随机发送 Fetch 小请求保活。
        """
        if time.time() - self.last_refresh_time >= 60*10:
            try:
                self._log("Cut all connections...")
                self.tunnel.cut_all_connections()
                self._log("refresh page...")
                self.page.refresh()
                self.page.wait.load_start(timeout=2)
                self.page.wait.doc_loaded()
                time.sleep(random.uniform(1, 3))
                self._check_page_is_session_expired_or_invalid('Book your appointment', html=self.page.html)
                self.last_refresh_time = time.time() 
                self._log("refresh page finished")
            except Exception as e:
                self._log(f"refresh page error: {str(e)}")
                self.is_healthy = False 
        else:
            choice = random.choice(['home', 'travel_groups'])
            headers = {}
            if choice == 'home':
                url = "https://visas-fr.tlscontact.com/"
            elif choice == 'travel_groups':
                url = "https://visas-fr.tlscontact.com/en-us/travel-groups"
                headers = {"cache-control": "max-age=0"}
            try:
                self._log(f"send keep alive fetch request ({choice})")
                self._perform_request("GET", url, headers=headers)
            except Exception as e:
                self._log(f"send keep alive fetch error: {str(e)}")
                self.is_healthy = False
            
    def simulate_random_human_clicks(self, min_x=300, max_x=800, min_y=400, max_y=600, min_clicks=1, max_clicks=2):
        """
        在指定区域内模拟人类随机移动鼠标并点击数次。
        
        :param min_x: X坐标最小范围
        :param max_x: X坐标最大范围
        :param min_y: Y坐标最小范围
        :param max_y: Y坐标最大范围
        :param min_clicks: 随便点击的最少次数
        :param max_clicks: 随便点击的最多次数
        """
        click_count = random.randint(min_clicks, max_clicks)
        self._log(f"Starting random human simulation: will click {click_count} times in the area.")
        for i in range(click_count):
            rand_x = random.randint(min_x, max_x)
            rand_y = random.randint(min_y, max_y)
            self._log(f"[{i+1}/{click_count}] Moving mouse to ({rand_x}, {rand_y}) and clicking")
            self.mouse.click(rand_x, rand_y, humanize=True)
            if i < click_count - 1:
                sleep_time = random.uniform(0.5, 1.8)
                self._log(f"Resting for {sleep_time:.2f} seconds before next click...")
                time.sleep(sleep_time)
        self._log("Random human clicks simulation completed.")

    def health_check(self) -> bool:
        if not self.is_healthy:
            return False
        if self.page is None:
            return False
        try:
            if not self.page.run_js("return 1;"):
                return False
        except:
            return False
            
        if self.config.session_max_life > 0:
            current_time = time.time()
            elapsed_time = current_time - self.session_create_time
            if elapsed_time > self.config.session_max_life:
                self._log(f"Session expired.")
                return False
        return True
    
    def _save_screenshot(self, name_prefix):
        try:
            timestamp = int(time.time())
            filename = f"{self.instance_id}_{name_prefix}_{timestamp}.jpg"
            save_path = os.path.join("data", filename)
            os.makedirs("data", exist_ok=True)
            self.page.get_screenshot(path=save_path, full_page=False)
            self._log(f"Screenshot saved to {save_path}")
        except Exception as e:
            self._log(f"Failed to save screenshot: {e}")

    def create_session(self):
        """
        全浏览器会话创建：过盾 -> JS注入登录 -> 状态机自动路由导航 -> 到达目标页
        """
        self._log(f"Initializing Session (ID: {self.instance_id})...")
        captcha_future = None
        captcha_executor = ThreadPoolExecutor(max_workers=1)
        login_captcha_cfg = self.free_config.get("login_captcha", {})
        if login_captcha_cfg.get('solve_advance'):
            login_page = login_captcha_cfg.get("page_url")
            site_key = login_captcha_cfg.get("site_key")
            task_type = login_captcha_cfg.get("task")
            self._log(f"🚀 Early starting background Captcha solve for sitekey={site_key}")
            rc_params = {
                "type": task_type,
                "page": login_page,
                "siteKey": site_key, 
                "apiToken": self.free_config.get("capsolver_key", "")
            }
            captcha_future = captcha_executor.submit(self._solve_recaptcha, rc_params)
        co = ChromiumOptions()
        
        def get_free_port():
            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
                s.bind(('', 0))
                return s.getsockname()[1]
        
        debug_port = get_free_port()
        self._log(f"Assigned Debug Port: {debug_port}")
        
        co.set_local_port(debug_port)       
        co.set_user_data_path(self.user_data_path)
        
        chrome_path = configure.CHROME_PATH
        if not chrome_path:
            chrome_path = os.getenv("CHROME_BIN")
        if chrome_path and os.path.exists(chrome_path):
            co.set_paths(browser_path=chrome_path)
        
        if self.config.proxy and self.config.proxy.ip:
            p = self.config.proxy
            self._log(f'Current proxy id={p.id}')
            if p.username and p.password:
                self._log(f"Starting Proxy Tunnel for {p.ip}...")
                exit_node = {
                    "name": "ExitNode",
                    "type": p.proto,
                    "server": p.ip,
                    "port": p.port,
                    "username": p.username,
                    "password": p.password
                }
                relay_node = None
                if configure.MIHOMO_RELAY_NODES:
                    relay_node = random.choice(configure.MIHOMO_RELAY_NODES)
                mihomo_path = configure.MIHOMO_BIN_PATH
                if not mihomo_path:
                    mihomo_path = os.getenv("MIHOMO_BIN")
                if not mihomo_path:
                    raise BizLogicError(message='Mihomo path is null, You need set mihomo bin path in configure or os env')
                self.tunnel = MihomoTunnel(mihomo_path, exit_node=exit_node, relay_node=relay_node)
                local_proxy = self.tunnel.start()
                self._log(f"Tunnel started at {local_proxy}")
                co.set_argument(f'--proxy-server={local_proxy}')
            else:
                proxy_str = f"{p.proto}://{p.ip}:{p.port}"
                co.set_argument(f'--proxy-server={proxy_str}')
        else:
            self._log("[WARN] No proxy configured!")

        specific_fp = FingerprintGenerator().generate(self.config.account.username)
        fp_seed = specific_fp.get("seed")
        fp_platform = specific_fp.get("platform")
        fp_brand = specific_fp.get("brand")
        self._log(f'browser fingerprint seed={fp_seed}')

        co.headless(False)
        co.set_argument('--no-sandbox')
        co.set_argument('--disable-dev-shm-usage')
        co.set_argument('--window-size=1920,1080')
        co.set_argument('--disable-blink-features=AutomationControlled')
        # co.set_argument('--ignore-gpu-blocklist')
        # co.set_argument('--enable-webgl')
        # co.set_argument('--use-gl=angle')
        # co.set_argument('--use-angle=swiftshader')
        co.set_argument(f"--fingerprint={fp_seed}")
        co.set_argument(f"--fingerprint-platform={fp_platform}")
        co.set_argument(f"--fingerprint-brand={fp_brand}")
        
        try:
            self.page = ChromiumPage(co)
            
            # --- 预检指纹信息 ---
            if self.config.debug:
                self.page.get('https://example.com')
                js_script = """
                function getFingerprint() {
                    let webglVendor = 'Unknown';
                    let webglRenderer = 'Unknown';
                    try {
                        let canvas = document.createElement('canvas');
                        let gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
                        if (gl) {
                            let debugInfo = gl.getExtension('WEBGL_debug_renderer_info');
                            if (debugInfo) {
                                webglVendor = gl.getParameter(debugInfo.UNMASKED_VENDOR_WEBGL);
                                webglRenderer = gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL);
                            }
                        }
                    } catch(e) {}

                    return {
                        "User-Agent": navigator.userAgent,
                        "Platform": navigator.userAgentData ? navigator.userAgentData.platform : navigator.platform,
                        "Brands": navigator.userAgentData ? navigator.userAgentData.brands.map(b => b.brand).join(', ') : 'Not Supported',
                        "CPU Cores": navigator.hardwareConcurrency,
                        "Language": navigator.language,
                        "Timezone": Intl.DateTimeFormat().resolvedOptions().timeZone,
                        "WebGL Vendor": webglVendor,
                        "WebGL Renderer": webglRenderer
                    };
                }
                return getFingerprint();
                """
                fp_data = self.page.run_js(js_script)
                self._log("================ 预检浏览器指纹数据 ================")
                self._log(json.dumps(fp_data, indent=4, ensure_ascii=False))
                self._log("====================================================")

            # --- 初始化访问与过盾 ---
            tls_url = self.free_config.get('tls_url', '')
            self._log(f"Navigating: {tls_url}")
            self.page.get(tls_url)
            time.sleep(5)
            if 'Attention Required! | Cloudflare' in self.page.title and 'Sorry, you have been blocked' in self.page.html:
                self._log(f'Block by cloudflare, try refresh...')
                self.page.refresh()
                self.page.wait.load_start(timeout=2)
                self.page.wait.doc_loaded()
            cf_bypasser = CloudflareBypasser(self.page, log=self.config.debug)
            if not cf_bypasser.bypass(max_retry=6):
                raise BizLogicError("Cloudflare bypass timeout")
            time.sleep(3)
            cf_bypasser.handle_waiting_room()
            
            self._log("Init humanize tools...")
            self.mouse = HumanMouse(self.page, debug=self.config.debug)
            self.keyboard = HumanKeyboard(self.page)
            viewport_width = self.page.rect.viewport_size[0]
            viewport_height = self.page.rect.viewport_size[1]
            init_x = random.randint(10, viewport_width - 10)
            init_y = random.randint(10, viewport_height - 10)
            self.mouse.move(init_x, init_y) 

            max_steps = 10 
            session_created = False
            has_submitted_login = False
            
            for step in range(max_steps):
                self.page.wait.doc_loaded()
                time.sleep(0.5)
                
                current_url = self.page.url
                self._log(f"--- [Router Step {step+1}] Current URL: {current_url} ---")
                
                cloudflare_blocked_indicators = [
                    "Sorry, you have been blocked" in self.page.html,
                    "You are being rate limited" in self.page.html,
                    "Cloudflare Ray ID" in self.page.html
                ]
                if any(cloudflare_blocked_indicators):
                    raise BizLogicError(message="Blocked by Cloudflare WAF. Need to change IP or browser fingerprint.")
                
                # 状态 1：到达终极目标页面 (成功退出条件)
                if "appointment-booking" in current_url or self.page.ele('tag:button@text():Book your appointment', timeout=1):
                    btn_selector = 'tag:button@text():Book your appointment'            
                    if self.page.wait.ele_displayed(btn_selector, timeout=10):
                        self.session_create_time = time.time()
                        self._log("✅ Login & Navigation Success! Reached appointment-booking.")
                        session_created = True
                        break
                
                # 状态 2：遇到没有申请人的拦截页 (致命错误退出条件)
                no_applicant_indicators = [
                    "Add a new applicant" in self.page.html,
                    "You have not yet added an applicant" in self.page.html,
                    "applicants-information" in current_url
                ]
                if any(no_applicant_indicators):
                    raise BizLogicError(message="No applicant added. Cannot proceed to booking.") 
                
                if current_url == tls_url:
                    # 状态 3：首页/登录入口页 -> 需要点击进入登录
                    if self.page.ele("tag:a@@href:login", timeout=1) and not self.page.ele('tag:label@@text():Email', timeout=1):
                        self._log("State: Login Portal. Clicking login link...")
                        login_link = self.page.ele("tag:a@@href:login")
                        self.mouse.human_click_ele(login_link)
                        
                        self.page.wait.load_start(timeout=3)
                        continue

                    if self.page.ele("tag:svg@@data-testid=user-button", timeout=1):
                        self._log("State: Already login, logout now...")
                        user_btn = self.page.ele("tag:svg@@data-testid=user-button")
                        self.mouse.human_click_ele(user_btn)
                        time.sleep(1.5)
                        logout_btn = self.page.ele("#logout")
                        self.mouse.human_click_ele(logout_btn)
                        
                        self.page.wait.load_start(timeout=3)
                        self.page.get(tls_url)
                        self.page.wait.load_start(timeout=3)
                        continue
                
                # 状态 4：真正的登录表单页
                if self.page.ele('tag:label@@text():Email', timeout=1) and not has_submitted_login:
                    self._log("State: Login Form. Processing credentials and Captcha...")
                    
                    recaptchav2_token = ""
                    if not captcha_future and (self.page.ele('.g-recaptcha') or self.page.ele('xpath://iframe[contains(@src, "recaptcha")]')):
                        rec_iframe = self.page.ele('xpath://iframe[contains(@src, "recaptcha")]')
                        rec_iframe_src = rec_iframe.attr('src')
                        rec_parsed = urlparse(rec_iframe_src)
                        rec_params = parse_qs(rec_parsed.query)
                        rec_sitekey = rec_params.get("k", [None])[0]
                        rec_size = rec_params.get("size", [None])[0]
                        
                        if 'normal' == rec_size:
                            self._log(f"Found dynamic sitekey={rec_sitekey}. Starting async Captcha solver...")
                            rc_params = {
                                "type": "ReCaptchaV2TaskProxyLess",
                                "page": current_url,
                                "siteKey": rec_sitekey, 
                                "apiToken": self.free_config.get("capsolver_key", "")
                            }
                            captcha_future = captcha_executor.submit(self._solve_recaptcha, rc_params)

                    username = self.config.account.username
                    password = self.config.account.password
                    
                    input_ele = self.page.ele('tag:label@@text():Email').next()
                    self.mouse.human_click_ele(input_ele)
                    time.sleep(random.uniform(0.2, 0.6))
                    self.keyboard.type_text(username, humanize=True)
                    time.sleep(random.uniform(0.5, 1.2)) 
                
                    input_ele = self.page.ele('tag:label@@text():Password').next()
                    self.mouse.human_click_ele(input_ele)
                    time.sleep(random.uniform(0.2, 0.6))
                    self.keyboard.type_text(password, humanize=True)
                    
                    # 注入 Token
                    if captcha_future:
                        self._log("Waiting for background Captcha result...")
                        try:
                            # 设一个合理的超时，防止死锁
                            recaptchav2_token = captcha_future.result(timeout=120) 
                            self._log("Background Captcha solved successfully!")
                        except Exception as e:
                            raise BizLogicError(f"Captcha solving failed or timed out: {e}")
                    
                        # 注入 Token
                        if recaptchav2_token:
                            inject_js = f"var g = document.getElementById('g-recaptcha-response'); if(g) {{ g.value = '{recaptchav2_token}'; }}"
                            self.page.run_js(inject_js)
                            time.sleep(random.uniform(0.5, 1.0))
                    
                    self._log("Submitting Login...")
                    login_btn = self.page.ele('tag:button@@text():Login')
                    self.mouse.human_click_ele(login_btn)
                    has_submitted_login = True
                    
                    self.page.wait.load_start(timeout=5)
                    continue
                
                # 状态 5：Travel Groups 页面
                if "travel-groups" in current_url:
                    self._log("State: Travel Groups. Selecting targeted group...")
                    groups = self._parse_travel_groups(self.page.html)
                    location = self.free_config.get('location')
                    self.travel_group = next((g for g in groups if location in g['location']), None)
                    
                    if not self.travel_group or not self.travel_group.get("submitted"):
                        self._save_screenshot("group_not_found")
                        raise NotFoundError(f"Group not found for {location}")
                
                    formgroup_id = self.travel_group.get('group_number')
                    btn_selector = f'tag:button@@name=formGroupId@@value={formgroup_id}'
                    
                    if self.page.wait.eles_loaded(btn_selector, timeout=10):
                        buttons = self.page.eles(btn_selector)
                        select_btn = next((btn for btn in reversed(buttons) if btn.rect.size[0] > 0 and btn.rect.size[1] > 0), None)
                        
                        if select_btn:
                            time.sleep(random.uniform(0.5, 1.2))
                            self.mouse.human_click_ele(select_btn)
                            self.page.wait.load_start(timeout=3)
                            continue
                        else:
                            self._log("[WARN] Select button found but not visible.")
                    else:
                        self._log(f"[WARN] Wait timeout for group button {formgroup_id}")
                
                # 状态 6：中间过渡页，需点击 "Book Appointment" 继续往下走
                if self.page.ele('#book-appointment-btn', timeout=1):
                    self._log("State: Intermediate Dashboard. Clicking Book Appointment button...")
                    self.mouse.human_click_ele(self.page.ele('#book-appointment-btn'))
                    
                    self.page.wait.load_start(timeout=3)
                    continue
                
                # 状态 7：登录失败校验 或 未知加载状态
                if "login-actions" in current_url and has_submitted_login:
                    self._log("Waiting on login-actions... (Might be authenticating or invalid credentials)")
                    time.sleep(2)
                    if self.page.ele('text:Invalid username or password', timeout=1): # 假设网页上有错误提示
                        raise BizLogicError(message="Login Failed! Invalid credentials or Captcha rejected.")
                    continue
                
                self._log("State: Transitioning or Unknown. Waiting 2 seconds...")
                time.sleep(2)
                    
            if not session_created:
                raise BizLogicError(f"Failed to reach appointment-booking after {max_steps} navigation steps. Stuck at: {self.page.url}")

        except Exception as e:
            self._log(f"Session Create Error: {e}")
            if self.config.debug:
                self._save_screenshot("create_session_except")
            self.cleanup()
            raise e

    def query(self, apt_type: AppointmentType) -> VSQueryResult:
        res = VSQueryResult()
        res.success = False

        slots = []
        self._log(f"Executing silent JS fetch...") 
        resp = self._perform_request("GET", self.page.url, retry_count=1)
        self._check_page_is_session_expired_or_invalid('Book your appointment', resp.text)
        slots = self._parse_appointment_slots(resp.text)
        
        if slots:
            res.success = True
            earliest_date = slots[0]["date"]
            earliest_dt = datetime.strptime(earliest_date, "%Y-%m-%d")
            res.availability_status = AvailabilityStatus.Available
            res.earliest_date = earliest_dt
            date_map: dict[datetime, list[TimeSlot]] = {}
            for s in slots:
                date_str = s["date"]
                dt = datetime.strptime(date_str, "%Y-%m-%d")
                date_map.setdefault(dt, []).append(
                    TimeSlot(time=s["time"], label=str(s.get("label", "")))
                )
            res.availability = [DateAvailability(date=d, times=slots) for d, slots in date_map.items()]
            self._log(f"Slot Found! -> {slots}")
        else:
            self._log("No slots available.")
            res.success = False
            res.availability_status = AvailabilityStatus.NoneAvailable
            
        # TODO(TEST): 临时测试预约提交
        if configure.TLS_TEST_BOOK_AFTER_QUERY:
            test_date = "2026-06-10"
            test_time = "09:00"
            test_label = ""
            test_dt = datetime.strptime(test_date, "%Y-%m-%d")
            query_res = VSQueryResult()
            query_res.success = True
            query_res.availability_status = AvailabilityStatus.Available
            query_res.earliest_date = test_dt
            query_res.availability = [
                DateAvailability(
                    date=test_dt,
                    times=[TimeSlot(time=test_time, label=test_label)]
                )
            ]
            self._log(f"[TEST] using fixed June slot: {test_date} {test_time} {test_label}")
            test_userinput = {
                "support_pta": False,
                "expected_end_date": "2100-01-01",
                "expected_start_date": "2000-01-01"
            }
            try:
                self.book(query_res, test_userinput)
            except Exception as e:
                self._log(f"[TEST] book() after query failed: {e}")
            self.is_healthy = False
        return res
    
    def book_bak(self, slot_info: VSQueryResult, user_inputs: Dict = None) -> VSBookResult:
        res = VSBookResult()
        res.success = False
        
        exp_start = user_inputs.get('expected_start_date', '')
        exp_end = user_inputs.get('expected_end_date', '')
        support_pta = user_inputs.get('support_pta', True)

        target_labels = ['']
        if support_pta:
            target_labels.append('pta')

        available_dates_str =[
            da.date.strftime("%Y-%m-%d")
            for da in slot_info.availability if da.date
        ]
        
        valid_dates_list = self._filter_dates(available_dates_str, exp_start, exp_end)
        if not valid_dates_list:
            raise NotFoundError(message="No dates match user constraints")
        
        all_possible_slots =[]
        for da in slot_info.availability:
            if not da.date:
                continue
                
            date_str = da.date.strftime("%Y-%m-%d")
            if date_str in valid_dates_list:
                for t in da.times:
                    if t.label in target_labels:
                        all_possible_slots.append({
                            "date": date_str,
                            "time_obj": t,
                            "label": t.label
                        })
        
        if not all_possible_slots:
            raise NotFoundError(message="No suitable slot found (after label filtering)")

        selected_slot = random.choice(all_possible_slots)
        selected_date = selected_slot["date"]
        selected_time = selected_slot["time_obj"]
        selected_label = selected_slot["label"]

        self._log(f"Found {len(all_possible_slots)} valid slots. selected slot: {selected_date} {selected_time.time} {selected_label}")
        self.page.listen.start('/workflow/appointment-booking', method='POST')
        page_url = self.page.url
        location = self.travel_group.get('location')
        mapper = {
            "London": "gbLON2fr",
            "Dublin": "ieDUB2fr"
        }
        location_id = mapper.get(location)
        form_group_id =self.travel_group.get('group_number')
        
        api_token = self.free_config.get("capsolver_key", "")
        rc_params = {
            "type": "ReCaptchaV3Task",
            "page": page_url,
            "action": "book", 
            "siteKey": "6LcTpXcfAAAAAM3VojNhyV-F1z92ADJIvcSZ39Y9",
            "apiToken": api_token,
            "proxy": True
        }
        g_token = self._solve_recaptcha(rc_params)

        ACTION_ID = "6033ac5e6e4ac04f59a4b74a9c5dd312876dd46bd9"
        
        js_script = f"""
        (async function() {{
            const url = "{page_url}";
            const groupId = "{form_group_id}";
            const locationId = "{location_id}";
            const selectedDate = "{selected_date}";
            const selectedTime = "{selected_time.time}";
            const selectedLabel = "{selected_label}";
            const captchaToken = "{g_token}";
            const actionId = "{ACTION_ID}";
            
            let castleToken = '';
            try {{
                const castleModule = window.__webpack_require__(93773);
                if (castleModule && castleModule.createRequestToken) {{
                    castleToken = await castleModule.createRequestToken();
                    console.log('Castle token obtained:', castleToken);
                }}
            }} catch(e) {{
                console.error('Failed to get Castle token:', e);
            }}
            
            let routerStateTree = '';
            try {{
                const routerModule = window.__webpack_require__(11807);
                const routerState = routerModule.getCurrentAppRouterState();
                if (routerState && routerState.tree) {{
                    const prepareModule = window.__webpack_require__(16378);
                    routerStateTree = prepareModule.prepareFlightRouterStateForRequest(routerState.tree);
                    console.log('Router state tree obtained');
                }}
            }} catch(e) {{
                console.error('Failed to get router state:', e);
            }}
            
            const formData = new FormData();
            formData.append('1_formGroupId', groupId);
            formData.append('1_lang', 'en-us');
            formData.append('1_process', 'APPOINTMENT');
            formData.append('1_location', locationId);
            formData.append('1_date', selectedDate);
            formData.append('1_time', selectedTime);
            formData.append('1_appointmentLabel', selectedLabel);
            formData.append('1_castleRequestToken', castleToken);
            formData.append('1_captchaToken', captchaToken);
            formData.append('0', '[{{"status":"IDLE"}},"$K1"]');

            const headers = {{
                'Accept': 'text/x-component',
                'Next-Action': actionId,
                'Next-Router-State-Tree': routerStateTree,
            }};
            
            const response = await fetch(url, {{
                method: 'POST',
                headers: headers,
                body: formData,
                credentials: 'include'
            }});
            
            const text = await response.text();
            const responseHeaders = {{}};
            response.headers.forEach((value, key) => {{
                responseHeaders[key] = value;
            }});
            const result = {{
                status: response.status,
                body: text,
                headers: responseHeaders,
                url: response.url,
                redirected: response.redirected,
                ok: response.ok
            }};
            return result;
        }})();
        """
        
        self._log("Submitting booking request via JS Fetch...")
        self.page.run_js(js_script)
        
        packet = self.page.listen.wait(timeout=15)
        if not packet:
            raise BizLogicError(message='Listening data failed')
        
        self.page.listen.stop()
        self._log(f"URL: {packet.url}")
        self._log(f"POST Body: {packet.request.postData}")
        self._log(f"POST Stat: {packet.response.status}")
        self._log(f"POST head: {packet.response.headers}")
        self._log(f"POST Resp: {packet.response.raw_body}")
        redirect_location = packet.response.headers.get('location', '') or ''
        appointment_confirmation_indicators = [
            "order-summary" in redirect_location,
            "partner-services" in redirect_location,
            "appointment-confirmation" in redirect_location,
        ]
        if any(appointment_confirmation_indicators):
            self._log(f"Booking Success!")
            res.success = True
            res.book_date = selected_date
            res.book_time = selected_time.time
            return res
        return res

    def book(self, slot_info: VSQueryResult, user_inputs: Dict = None) -> VSBookResult:
        res = VSBookResult()
        res.success = False
        
        exp_start = user_inputs.get('expected_start_date', '')
        exp_end = user_inputs.get('expected_end_date', '')
        support_pta = user_inputs.get('support_pta', True)

        target_labels = ['']
        if support_pta:
            target_labels.append('pta')

        available_dates_str =[
            da.date.strftime("%Y-%m-%d")
            for da in slot_info.availability if da.date
        ]
        
        valid_dates_list = self._filter_dates(available_dates_str, exp_start, exp_end)
        if not valid_dates_list:
            raise NotFoundError(message="No dates match user constraints")
        
        all_possible_slots =[]
        for da in slot_info.availability:
            if not da.date:
                continue
                
            date_str = da.date.strftime("%Y-%m-%d")
            if date_str in valid_dates_list:
                for t in da.times:
                    if t.label in target_labels:
                        all_possible_slots.append({
                            "date": date_str,
                            "time_obj": t,
                            "label": t.label
                        })
        
        if not all_possible_slots:
            raise NotFoundError(message="No suitable slot found (after label filtering)")

        selected_slot = random.choice(all_possible_slots)
        selected_date = selected_slot["date"]
        selected_time = selected_slot["time_obj"]
        selected_label = selected_slot["label"]

        self._log(f"Found {len(all_possible_slots)} valid slots. selected slot: {selected_date} {selected_time.time} {selected_label}")
        self.page.listen.start('/workflow/appointment-booking', method='POST')
        js_update_form = f"""
        try {{
            const buttons = Array.from(document.querySelectorAll('button[type="submit"]'));
            const submitBtn = buttons.find(btn => {{
                return btn.textContent.trim().toLowerCase().includes('book your appointment');
            }});
            if (!submitBtn) return 'Submit button not found';
            const form = submitBtn.closest('form');
            if (!form) return 'Correct form not found';
            function setReactValue(input, value) {{
                if (!input) return;
                input.value = value;
            }}
            setReactValue(form.querySelector('input[name="date"]'), '{selected_date}');
            setReactValue(form.querySelector('input[name="time"]'), '{selected_time.time}');
            setReactValue(form.querySelector('input[name="appointmentLabel"]'), '{selected_label}');
            submitBtn.removeAttribute('disabled');
            submitBtn.classList.remove('opacity-50', 'cursor-not-allowed'); 
            return 'form_updated';
        }} catch (e) {{
            return e.toString();
        }}
        """
        update_res = self.page.run_js(js_update_form)
        self._log(f"Form update triggered: {update_res}")
        
        if update_res != 'form_updated':
            raise BizLogicError(message=f"Failed to update form: {update_res}")
        
        submit_btn = self.page.ele('tag:button@@type=submit@@text():Book your appointment')
        if not submit_btn:
            raise BizLogicError(message="Submit button not found for mouse click")
            
        self._log("Moving mouse to submit button and clicking")
        self.mouse.human_click_ele(submit_btn)
            
        packet = self.page.listen.wait(timeout=10)
        if not packet:
            raise BizLogicError(message='Listening data failed')
        
        self.page.listen.stop()
        self._log(f"URL: {packet.url}")
        self._log(f"POST Body: {packet.request.postData}")
        self._log(f"POST Resp: {packet.response.body}")

        self._log("Waiting for Next.js to process the form submission...")
        for _ in range(10):
            try:
                current_page_url = self.page.url
                current_page_html = self.page.html
                appointment_confirmation_indicators = [
                    "order-summary" in current_page_url,
                    "partner-services" in current_page_url,
                    "appointment-confirmation" in current_page_url,
                    "Change my appointment" in current_page_html,
                    "Book a new appointment" in current_page_html,
                ]
                
                if any(appointment_confirmation_indicators):
                    self._log(f"✅ BOOKING SUCCESS! Redirected to: {current_page_url}")
                    res.success = True
                    res.label = selected_label
                    res.book_date = selected_date
                    res.book_time = selected_time.time
                    self._save_screenshot("book_slot_success")
                    break
                
                toast_selector = 'tag:div@role=alert'
                toast_ele = self.page.ele(toast_selector, timeout=0.5)
                if toast_ele:
                    error_msg = toast_ele.text
                    self._log(f"❌ BOOKING FAILED! Detected popup: {error_msg}")
                    break
                time.sleep(0.5)
            except Exception:
                pass
        return res

    def _perform_request(self, method, url, headers=None, data=None, json_data=None, params=None, retry_count=0):
        """
        在浏览器上下文中注入 JS 执行 Fetch
        """
        if not self.page:
            raise BizLogicError("Browser not initialized")

        if params:
            from urllib.parse import urlencode
            if '?' in url:
                url += '&' + urlencode(params)
            else:
                url += '?' + urlencode(params)

        fetch_options = {
            "method": method.upper(),
            "headers": headers or {},
            "credentials": "include"
        }

        # Body 处理
        if json_data:
            fetch_options['body'] = json.dumps(json_data)
            fetch_options['headers']['Content-Type'] = 'application/json'
        elif data:
             if isinstance(data, dict):
                from urllib.parse import urlencode
                fetch_options['body'] = urlencode(data)
                fetch_options['headers']['Content-Type'] = 'application/x-www-form-urlencoded'
             else:
                 fetch_options['body'] = data

        js_script = f"""
        const url = "{url}";
        const options = {json.dumps(fetch_options)};
        
        return fetch(url, options)
            .then(async response => {{
                const text = await response.text();
                const headers = {{}};
                response.headers.forEach((value, key) => headers[key] = value);
                
                return {{
                    status: response.status,
                    body: text,
                    headers: headers,
                    url: response.url
                }};
            }})
            .catch(error => {{
                return {{
                    status: 0,
                    body: error.toString(),
                    headers: {{}},
                    url: url
                }};
            }});
        """
        
        res_dict = self.page.run_js(js_script, timeout=30)
        resp = BrowserResponse(res_dict)
        
        if resp.status_code == 200:
            return resp
        elif resp.status_code == 401:
            self.is_healthy = False
            raise SessionExpiredOrInvalidError()
        elif resp.status_code == 403:
            if retry_count < 2:
                self._log(f"HTTP 403 Detected. Cloudflare session expired? Attempting refresh (Try {retry_count+1}/2)...")
                if self._refresh_firewall_session():
                    self._log("Firewall session refreshed. Retrying request...")
                    return self._perform_request(method, url, headers, data, json_data, params, retry_count+1)
                else:
                    self._log("Failed to refresh firewall session.")    
            raise PermissionDeniedError(f"HTTP 403: {resp.text[:100]}")
        elif resp.status_code == 429:
            self.is_healthy = False
            raise RateLimiteddError()
        else:
            if resp.status_code == 0:
                 raise BizLogicError(f"Network Error: {resp.text}")
            raise BizLogicError(message=f"HTTP Error {resp.status_code}: {resp.text[:100]}")
    
    def _refresh_firewall_session(self) -> bool:
        """
        主动刷新页面以触发 Cloudflare 挑战并尝试通过
        """
        try:
            self._log("Refreshing page to trigger Cloudflare...")
            self.page.refresh()
            cf = CloudflareBypasser(self.page, log=self.config.debug)
            success = cf.bypass(max_retry=6)
            
            if success:
                title = self.page.title.lower()
                if "access denied" in title:
                    return False
                time.sleep(2)
                return True
            
            return False
        except Exception as e:
            self._log(f"Error during firewall refresh: {e}")
            return False

    def _solve_recaptcha(self, params) -> str:
        """调用 VSCloudApi 解决 ReCaptcha"""
        key = params.get("apiToken")
        if not key:
            raise NotFoundError("Api-token required")
        
        submit_url = "https://api.capsolver.com/createTask"
        task = {
            "type": params.get("type"),
            "websiteURL": params.get("page"),
            "websiteKey": params.get("siteKey"),
        }
        if params.get("action"):
            task["pageAction"] = params.get("action")
            
        if params.get("proxy"):
            p = self.config.proxy
            task["proxyType"] = p.proto
            task["proxyAddress"] = p.ip
            task["proxyPort"] = p.port
            if p.username:
                task["proxyLogin"] = p.username
                task["proxyPassword"] = p.password
        
        payload = {"clientKey": key, "task": task}
        import requests as req
        r = req.post(submit_url, json=payload, timeout=20)
        if r.status_code != 200:
            raise BizLogicError(message="Failed to submit capsolver task")
        
        task_id = r.json().get("taskId")
        for _ in range(20):
            r = req.post("https://api.capsolver.com/getTaskResult", json={"clientKey": key, "taskId": task_id}, timeout=20)
            if r.status_code == 200:
                d = r.json()
                if d.get("status") == "ready":
                    return d["solution"]["gRecaptchaResponse"]
            time.sleep(3)
        raise BizLogicError(message="Capsolver task timeout")

    def _parse_travel_groups(self, html_content) -> List[Dict]:
        groups = []
        js_pattern = r'\\"travelGroups\\":\s*(\[.*?\]),\\"availableCountriesToCreateGroups'
        js_match = re.search(js_pattern, html_content, re.DOTALL)
        if js_match:
            json_str = js_match.group(1).replace(r'\"', '"')
            data = json.loads(json_str)
            for g in data:
                groups.append({
                    'group_name': g.get('groupName'),
                    'group_number': g.get('formGroupId'),
                    'location': g.get('vacName'),
                    'submitted': g.get('submitted')
                })
        else:
            self._log('Parsed travel group page, but not found travelGroups')
        return groups

    def _parse_appointment_slots(self, html_content) -> List[Dict]:
        slots = []
        pattern = r'"availableAppointments\\":\s*(\[.*\]),\\"showFlexiAppointment'
        match = re.search(pattern, html_content, re.DOTALL)
        
        if match:
            json_str = match.group(1).replace(r'\"', '"')
            data = json.loads(json_str)
            for day in data:
                d_str = day.get('day')
                for s in day.get('slots', []):
                    labels = s.get('labels', [])
                    lbl = None
                    if 'pta' in labels: lbl = 'pta'
                    elif 'ptaw' in labels: lbl = 'ptaw'
                    elif '' in labels: lbl = ''
                    if lbl is not None:
                        slots.append({
                            'date': d_str,
                            'time': s.get('time'),
                            'label': lbl
                        })
        return slots
  
    def _check_page_is_session_expired_or_invalid(self, keyword, html: str) -> bool:
        if not html:
            self.is_healthy = False
            raise SessionExpiredOrInvalidError()
        
        html_lower = html.lower()
        if keyword.lower() not in html_lower: 
            session_expire_or_invalid_indicators = [
                'redirected automatically' in html_lower,
                'login' in html_lower and 'password' in html_lower,
                'session expired' in html_lower
            ]
            if any(session_expire_or_invalid_indicators):
                self.is_healthy = False
                raise SessionExpiredOrInvalidError()
            
    def _filter_dates(self, dates: List[str], start_str: str, end_str: str) -> List[str]:
        if not start_str or not end_str:
            return dates
        valid_dates = []
        s_date = datetime.strptime(start_str[:10], "%Y-%m-%d")
        e_date = datetime.strptime(end_str[:10], "%Y-%m-%d")
        for date_str in dates:
            curr_date = datetime.strptime(date_str, "%Y-%m-%d")
            if s_date <= curr_date <= e_date:
                valid_dates.append(date_str)
        random.shuffle(valid_dates)
        return valid_dates
    
    # --- 资源清理核心方法 ---
    def cleanup(self):
        """
        销毁浏览器并彻底删除临时文件
        """
        if self.page:
            try:
                self.page.quit(force=True)
            except Exception:
                pass
            self.page = None
        
        if os.path.exists(self.root_workspace):
            for _ in range(3):
                try:
                    time.sleep(0.2)
                    shutil.rmtree(self.root_workspace, ignore_errors=True)
                    break
                except Exception as e:
                    self._log(f"Cleanup retry: {e}")
                    time.sleep(0.5)
            
            if os.path.exists(self.root_workspace):
                 self._log(f"[WARN] Failed to fully remove workspace: {self.root_workspace}")
        if self.tunnel:
            try: self.tunnel.stop()
            except: pass
            self.tunnel = None
        
    def __del__(self):
        """
        析构函数：当对象被垃圾回收时自动调用
        """
        self.cleanup()